<script setup lang="ts">
import { useRenderIcon } from "@/components/ReIcon/src/hooks";
import { ref, computed, watch, getCurrentInstance } from "vue";

import Dept from "@iconify-icons/ri/git-branch-line";
// import Reset from "@iconify-icons/ri/restart-line";
import More2Fill from "@iconify-icons/ri/more-2-fill";
import OfficeBuilding from "@iconify-icons/ep/office-building";
import LocationCompany from "@iconify-icons/ep/add-location";
import ExpandIcon from "../svg/expand.svg?component";
import UnExpandIcon from "../svg/unexpand.svg?component";

interface Tree {
  id: number;
  name: string;
  highlight?: boolean;
  children?: Tree[];
}

defineProps({
  treeLoading: Boolean,
  treeData: Array
});

const emit = defineEmits(["tree-select"]);

const treeRef = ref();
const isExpand = ref(true);
const searchValue = ref("");
const highlightMap = ref({});
const { proxy } = getCurrentInstance();
const defaultProps = {
  children: "children",
  label: "name"
};
const buttonClass = computed(() => {
  return ["!h-[20px]", "!text-sm", "reset-margin", "!text-[var(--el-text-color-regular)]", "dark:!text-white", "dark:hover:!text-primary"];
});

const filterNode = (value: string, data: Tree) => {
  if (!value) return true;
  return data.name.includes(value);
};

function nodeClick(value) {
  const nodeId = value.$treeNodeId;
  highlightMap.value[nodeId] = highlightMap.value[nodeId]?.highlight
    ? Object.assign({ id: nodeId }, highlightMap.value[nodeId], {
        highlight: false
      })
    : Object.assign({ id: nodeId }, highlightMap.value[nodeId], {
        highlight: true
      });
  Object.values(highlightMap.value).forEach((v: Tree) => {
    if (v.id !== nodeId) {
      v.highlight = false;
    }
  });
  emit("tree-select", highlightMap.value[nodeId]?.highlight ? Object.assign({ ...value, selected: true }) : Object.assign({ ...value, selected: false }));
}

function toggleRowExpansionAll(status) {
  isExpand.value = status;
  const nodes = (proxy.$refs["treeRef"] as any).store._getAllNodes();
  for (let i = 0; i < nodes.length; i++) {
    nodes[i].expanded = status;
  }
}

/** 重置部门树状态（选中状态、搜索框值、树初始化） */
function onTreeReset() {
  highlightMap.value = {};
  searchValue.value = "";
  toggleRowExpansionAll(true);
}

watch(searchValue, val => {
  treeRef.value!.filter(val);
});

defineExpose({ onTreeReset });
</script>

<template>
  <div v-loading="treeLoading" class="h-full bg-bg_color overflow-auto">
    <div class="flex items-center h-[34px]">
      <el-input v-model="searchValue" class="ml-2" size="small" placeholder="请输入部门名称" clearable>
        <template #suffix>
          <el-icon class="el-input__icon">
            <IconifyIconOffline v-show="searchValue.length === 0" icon="ri:search-line" />
          </el-icon>
        </template>
      </el-input>
      <el-dropdown :hide-on-click="false">
        <IconifyIconOffline class="w-[28px] cursor-pointer" width="18px" :icon="More2Fill" />
        <template #dropdown>
          <el-dropdown-menu>
            <el-dropdown-item>
              <el-button :class="buttonClass" link type="primary" :icon="useRenderIcon(isExpand ? ExpandIcon : UnExpandIcon)" @click="toggleRowExpansionAll(isExpand ? false : true)">
                {{ isExpand ? "折叠全部" : "展开全部" }}
              </el-button>
            </el-dropdown-item>
            <!-- <el-dropdown-item>
              <el-button
                :class="buttonClass"
                link
                type="primary"
                :icon="useRenderIcon(Reset)"
                @click="onTreeReset"
              >
                重置状态
              </el-button>
            </el-dropdown-item> -->
          </el-dropdown-menu>
        </template>
      </el-dropdown>
    </div>
    <el-divider />
    <el-tree ref="treeRef" :data="treeData" node-key="id" size="small" :props="defaultProps" default-expand-all :expand-on-click-node="false" :filter-node-method="filterNode" @node-click="nodeClick">
      <template #default="{ node, data }">
        <span
          :class="['pl-1', 'pr-1', 'rounded', 'flex', 'items-center', 'select-none', 'hover:text-primary', searchValue.trim().length > 0 && node.label.includes(searchValue) && 'text-red-500', highlightMap[node.id]?.highlight ? 'dark:text-primary' : '']"
          :style="{
            color: highlightMap[node.id]?.highlight ? 'var(--el-color-primary)' : '',
            background: highlightMap[node.id]?.highlight ? 'var(--el-color-primary-light-7)' : 'transparent'
          }"
        >
          <IconifyIconOffline :icon="data.type === 1 ? OfficeBuilding : data.type === 2 ? LocationCompany : Dept" />
          {{ node.label }}
        </span>
      </template>
    </el-tree>
  </div>
</template>

<style lang="scss" scoped>
:deep(.el-divider) {
  margin: 0;
}

:deep(.el-tree) {
  --el-tree-node-hover-bg-color: transparent;
}
</style>
